<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"> <style>
	.KEYW {color: #933;}
	.COMM {color: #bbb; font-style: italic;}
	.NUMB {color: #393;}
	.STRN {color: #393;}
	.REGX {color: #339;}
	.line {border-right: 1px dotted #666; color: #666; font-style: normal;}
	</style></head><body><pre><span class='line'>  1</span> <span class="COMM">/**
<span class='line'>  2</span>  * JString对象,功能类似于Java中的StringBuilder
<span class='line'>  3</span>  * @example 示例:
<span class='line'>  4</span> var str = new JString();
<span class='line'>  5</span> str.append('Hello').append(' World');
<span class='line'>  6</span> alert(str.toString()); // Hello World
<span class='line'>  7</span>  * @class
<span class='line'>  8</span>  */</span><span class="WHIT">
<span class='line'>  9</span> </span><span class="KEYW">function</span><span class="WHIT"> </span><span class="NAME">JString</span><span class="PUNC">(</span><span class="NAME">s</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 10</span> </span><span class="WHIT">	</span><span class="NAME">this._strings</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">Array</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 11</span> </span><span class="WHIT">	</span><span class="KEYW">if</span><span class="PUNC">(</span><span class="NAME">s</span><span class="WHIT"> </span><span class="PUNC">&&</span><span class="WHIT"> </span><span class="KEYW">typeof</span><span class="WHIT"> </span><span class="NAME">s</span><span class="WHIT"> </span><span class="PUNC">===</span><span class="WHIT"> </span><span class="STRN">'string'</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 12</span> </span><span class="WHIT">		</span><span class="NAME">this._strings.push</span><span class="PUNC">(</span><span class="NAME">s</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 13</span> </span><span class="WHIT">	</span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 14</span> </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 15</span> 
<span class='line'> 16</span> </span><span class="COMM">/**
<span class='line'> 17</span>  * 追加字符串
<span class='line'> 18</span>  * @return 返回JString对象
<span class='line'> 19</span>  */</span><span class="WHIT">
<span class='line'> 20</span> </span><span class="NAME">JString.prototype.append</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">s</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 21</span> </span><span class="WHIT">	</span><span class="NAME">this._strings.push</span><span class="PUNC">(</span><span class="NAME">s</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 22</span> </span><span class="WHIT">	</span><span class="KEYW">return</span><span class="WHIT"> </span><span class="KEYW">this</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 23</span> </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 24</span> 
<span class='line'> 25</span> </span><span class="COMM">/**
<span class='line'> 26</span>  * 返回字符串
<span class='line'> 27</span>  */</span><span class="WHIT">
<span class='line'> 28</span> </span><span class="NAME">JString.prototype.toString</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 29</span> </span><span class="WHIT">	</span><span class="KEYW">return</span><span class="WHIT"> </span><span class="NAME">this._strings.join</span><span class="PUNC">(</span><span class="STRN">""</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 30</span> </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 31</span> </span></pre></body></html>